ADS Tech Mini Drive Kit
 

Designed with the same sleek look and feel of the Mac mini, the stackable ADS Tech’s Mini Drive Kit also offers the same small form factor as the Mac mini - it is just 6.5 inches square and 2 inches high. When plugged into the USB 2.0 or USB 1.1 port of a computer, the Mini Drive Kit is instantly recognized, there’s no need to configure the drive or reboot the system.